1 files changed, 0 insertions, 92 deletions
diff --git a/wx+/focus.h b/wx+/focus.h
deleted file mode 100644
index 2920828f..00000000
--- a/wx+/focus.h
+++ /dev/null
@@ -1,92 +0,0 @@
-// *****************************************************************************
-// * This file is part of the FreeFileSync project. It is distributed under    *
-// * GNU General Public License: https://www.gnu.org/licenses/gpl-3.0          *
-// * Copyright (C) Zenju (zenju AT freefilesync DOT org) - All Rights Reserved *
-// *****************************************************************************
-
-#ifndef FOCUS_1084731021985757843
-#define FOCUS_1084731021985757843
-
-#include <wx/toplevel.h>
-
-
-namespace zen
-{
-//pretty much the same like "bool wxWindowBase::IsDescendant(wxWindowBase* child) const" but without the obvious misnomer
-inline
-bool isComponentOf(const wxWindow* child, const wxWindow* top)
-{
-    for (const wxWindow* wnd = child; wnd != nullptr; wnd = wnd->GetParent())
-        if (wnd == top)
-            return true;
-    return false;
-}
-
-
-inline
-wxWindow& getRootWindow(wxWindow& child)
-{
-    wxWindow* root = &child;
-    for (;;)
-        if (wxWindow* parent = root->GetParent())
-            root = parent;
-        else
-            return *root;
-}
-
-
-inline
-wxTopLevelWindow* getTopLevelWindow(wxWindow* child)
-{
-    for (wxWindow* wnd = child; wnd != nullptr; wnd = wnd->GetParent())
-        if (auto tlw = dynamic_cast<wxTopLevelWindow*>(wnd)) //why does wxWidgets use wxWindows::IsTopLevel() ??
-            return tlw;
-    return nullptr;
-}
-
-
-/* Preserving input focus has to be more clever than:
-     wxWindow* oldFocus = wxWindow::FindFocus();
-     ZEN_ON_SCOPE_EXIT(if (oldFocus) oldFocus->SetFocus());
-
-=> wxWindow::SetFocus() internally calls Win32 ::SetFocus, which calls ::SetActiveWindow, which - lord knows why - changes the foreground window to the focus window
-    even if the user is currently busy using a different app! More curiosity: this foreground focus stealing happens only during the *first* SetFocus() after app start!
-    It also can be avoided by changing focus back and forth with some other app after start => wxWidgets bug or Win32 feature???                                      */
-
-struct FocusPreserver
-{
-    FocusPreserver()
-    {
-        if (wxWindow* win = wxWindow::FindFocus())
-            setFocus(win);
-    }
-
-    ~FocusPreserver()
-    {
-        //wxTopLevelWindow::IsActive() does NOT call Win32 ::GetActiveWindow()!
-        //Instead it checks if ::GetFocus() is set somewhere inside the top level
-        //Note: Both Win32 active and focus windows are *thread-local* values, while foreground window is global! https://devblogs.microsoft.com/oldnewthing/20131016-00/?p=2913
-
-        if (oldFocusId_ != wxID_ANY)
-            if (wxWindow* oldFocusWin = wxWindow::FindWindowById(oldFocusId_))
-                if (wxTopLevelWindow* topWin = getTopLevelWindow(oldFocusWin))
-                    if (topWin->IsActive()) //Linux/macOS: already behaves just like ::GetForegroundWindow() on Windows!
-                        oldFocusWin->SetFocus();
-    }
-
-    wxWindowID getFocusId() const { return oldFocusId_; }
-
-    void setFocus(wxWindow* win)
-    {
-        oldFocusId_ = win->GetId();
-        assert(oldFocusId_ != wxID_ANY);
-    }
-
-private:
-    wxWindowID oldFocusId_ = wxID_ANY;
-    //don't store wxWindow* which may be dangling during ~FocusPreserver()!
-    //test: click on delete folder pair and immediately press F5 => focus window (= FP del button) is defer-deleted during sync
-};
-}
-
-#endif //FOCUS_1084731021985757843